It is most unreasonable. The existence and nature of God can be proved by pure reason from: order and law in nature; motion and change; causality, and dependence.
But the history of Christ Himself is factual – Quadratus writes (circa 123 A.D.) that in his day there were still persons around who had been cured or raised from the dead by Jesus – prime witnesses. [Eusebius, *Church History, 4.3, 1.2; See
Free From All Error, Fr W. Most, p 12]. In that very personal curing of ailments, and raising from the dead, Jesus made plain that His suffering, crucifixion and death were to redeem humanity from Original Sin and enable salvation for each one of us.
The facts of Jesus miracles as the Son of God were recorded by His own Apostles who were present – Saints Matthew and John were companions of Christ, and Saints Mark and Luke lived in constant contact with His contemporaries.
His miracles “were so frequent, the eyewitnesses so numerous, and the evidence so stark, that not even Christ’s enemies disputed the fact of their occurrence. Instead they ascribed them to the power of the devil, or defied Him to perform another one in His own favour.” (See Mt 12:24; 27:39-42; Jn 11:47).
Apologetics and Catholic Doctrine, Sheehan/Joseph, Saint Austin Press, 2001, p 104].
Modern Catholic Dictionary
by Fr. John A. Hardon, S.J.
therealpresence.org/cgi-bin/getdefinition.pl
BELIEF. The acceptance of something as true on a trustworthy person’s word. It differs from faith only in the stress on confidence in the one who is believed. Moreover, belief emphasizes the act of the will, which disposes one to believe, where faith is rather the act of the mind, which assents to what is believed.
CERTITUDE. Firm assent of the mind to a proposition without fear of error. It implies clear knowledge that the evidence for the assent excludes even the possibility of error.
Fr Thomas Dubay:
“They attain truth who love it. One of the chief immoralities is an indifference to truth. It is worse than sexual perversion, said Jesus Himself. Those who reject His representatives are more guilty than perverted Sodom and Gomorrah (Mt 10:14-15). Indifference to truth is nothing less than and indifference to reality and to the Author of reality…One of the too little noticed traits of the saints is their utter commitment to truth.” (p 189-190).
Objective certitude “has three traits. First it is an enlightened assent. One not only knows something, but he also knows why he knows it, and he sees the objective reasons why it is so….[Second] certitude excludes a reasonable fear of being wrong…[Third] certitude is unchangeable. Because it is based on objective reality it is permanent.
Doubt and Difficulty
“A negative doubt is a close relation to ignorance. An opinion is an assent of the mind but with a well-founded fear that the opposite may be true.” With an unhealthy doubt, “a person suspends judgment even when the evidence is conclusive and completely adequate. This is skepticism, intellectual cowardice……A difficulty is a problem, a not-seeing how two realities fit together….a situation we do not yet understand and perhaps will never understand. It is a limitation on our knowledge, a passing or permanent limitation.”
John Henry Cardinal Newman said “ten thousand difficulties do not make one doubt, as I understand the subject; difficulty and doubt are incommensurate.” (
Apologia pro vita Sua). [Fr Dubay, *Faith And Certitude, Ignatius Press, 1985, p 82-4].